Poor you and Simba!

I would hope this was a one-time thing....maybe he thought he sensed or smelled or saw something that wasn't really happening...

Nothing in the area has changed since the last time you brought him up? Furniture moved, anything little like that?

Also - because Simba was so uptight when he arrived, maybe there will be the odd flareup from time to time until he settles totally.

My fluffy boy Cole was dumped as an adult - I have had him almost a year now, and although he was very social at the start, I STILL see little signs of adjustment and settling in.

HUGS to you and your special boy!